98-175666-A 5-1
Chapter 5
Installation check lists 5
Use the following sections to verify that the system is ready for customer delivery.
5.1 Installation check list: Antenna
Step Task Further information Done
1.
Check that the antenna is free of
obstructions.
See Obstructions (ADU
shadowing) on page 2-4.
2.
Make sure there is sufficient space for
access through the service hatch.
See To install the ADU on page 2-
20.
3.
Make sure to maintain the vertical
orientation of the ADU center line.
4.
Check that the ADU is installed where
vibrations are limited to a minimum.
5.
Check that you programmed the
blocking zones correctly.
See Blocking zones – azimuth and
elevation on page 2-5
and
Blocking zones on page 4-15.
6.
Check that the safety distance for
radiation hazard is obeyed.
See Safe access to the ADU:
Radiation hazard on page 2-3.
7.
Check that the mounting height of the
antenna is in accordance with the
ship’s min. roll period.
See Ship motion and offset from
the ship’s motion centre on
page 2-4.
8.
Make sure that the requirements for
mast foundation and height, including
flatness, gusset plates and distance
from welding seams are met.
See ADU mast flange and mast
length on page 2-6.
9.
Make sure that the distances to radar,
Inmarsat systems, GPS receivers and
other transmitters are as required.
See Interference from radar,
GPS/GNSS, L-band and other
transmitters on page 2-16.
10.
Make sure that the drain tube is open
and risk for water intrusion is at a
minimum.
See Condensation and water
intrusion on page 2-18.
11.
Check that the ADU is grounded
correctly, using the mounting bolts.
See To ground the ADU on
page 2-23 and
Grounding and RF protection on
page E-1.
Table 5-1: Installation check list: Antenna
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